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After updating Firefox to ver. 67.0, a dialog box with the headline "Open Executable File?" is coming up every time I open an executable.

How can I disable those warnings? (Unchecking these on Firefox's settings didn't help).

shemadolev
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2 Answers2

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Go to about:config and paste this key in the search field:

browser.download.skipConfirmLaunchExecutable

It could not exist, but you can create it from there as a bool. Set it to true.

user1238610
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For Web Start (JNLP), newer Java versions configure (on Windows and MAC) a custom protocol handler that seems to avoid this dialog. Similar can be done on Linux but would require some manual configuration which is explained here:

https://docs.oracle.com/javase/8/docs/technotes/guides/javaws/developersguide/setup.html

So instead of http://example.com/foo.jnlp do this: jnlp://example.com/foo.jnlp

MichaelJF
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    Although it seems that replacing http:// with jnlp:// really bypasses this message, the site I'm using uses probably JS to open these Java apps, instead of supplying a direct link to the JNLP... For example - https://mathnet.technion.ac.il/M/mathnet?action=load&key=jnlpP&homework=8&item=5&mathnetsessionid=mnlxqmrqfsclhfej (Replacing https:// here with jnlp only causes an application error in Java, saying it's "Unable to launch the application" – shemadolev Jun 01 '19 at 21:22